APW7136YCI データシートの表示（PDF） - Anpec Electronics

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APW7136YCI

1MHz, High-Efficiency, Step-Up Converter for 2 to 8 White LEDs

Anpec Electronics 

APW7136A/B/C

1MHz, High-Efficiency, Step-Up Converter for 2 to 8 White LEDs

Features

• Wide Input Voltage from 2.7V to 6V

• 0.25V Reference Voltage

• Fixed 1MHz Switching Frequency

• High Efficiency up to 87%

• 100Hz to 100KHz PWM brightness control fre-

quency

• Open-LED Protection

• Under Voltage Lockout Protection

• Over Temperature Protection

• <1µA Quiescent Current during Shutdown

• SOT-23-6 Package

• Lead Free Available (RoHS Compliant)

Applications

• White LED Display Backlighting

• Cell Phone and Smart Phone

• PDA, PMP, MP3

• Digital Camera

Pin Configuration

SOT-23-6 Top View

LX 1

GND 2

FB 3

6 VIN

5 OVP

4 EN

General Description

The APW7136A/B/C is a current-mode and fixed frequency

boost converter with an integrated N-FET to drive up to 8

white LEDs in series.

The series connection allows the LED current to be iden-

tical for uniform brightness. Its low on-resistance of N-

FET and feedback voltage reduce power loss and achieves

high efficiency. Fast 1MHz current-mode PWM operation

is available for input and output capacitors and a small

inductor while minimizing ripple on the input supply. The

OVP pin monitors the output voltage and stop switching if

exceeds the over-voltage threshold. An internal soft-start

circuit eliminates the inrush current during start-up.

The APW7136A/B/C also integrates under-voltage

lockout, over-temperature protection and current limit

circuits. The APW7136/A/B/C is available in a SOT-23-6

package.

Simplified Application Circuit

VIN

C1

4.7µF

OFF ON

L1

22µH

6 VIN

LX 1

2

GND

OVP 5

4

EN

FB 3

VOUT

C2

1µF Up to 8

WLEDs

R1

12Ω

Ordering and Marking Information

APW7136

Lead Free Code

Handling Code

Temperature Range

Package Code

OVP Voltage Code

OVP Voltage Code

A: 20V B: 28V C: 35V

Package Code

C : SOT-23-6

Operating Ambient Temperature Range

I : -40 to 85oC

Handling Code

TR : Tape & Reel

Lead Free Code

L : Lead Free Device

APW7136YCI :

CFYX

Y - OVP Voltage Code

X - Date Code

Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully

compliant with RoHS and compatible with both SnPb and lead-free soldering operations. ANPEC lead-free products meet or exceed the lead-

free requirements of IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

Copyright © ANPEC Electronics Corp.

1

Rev. A.2 - Jan., 2008

www.anpec.com.tw

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